Edge-trimming machine



June v23, 1925. 1,542,872 H. F.. GRUMAN nnen TRIMMING MACHINE Filed Jan. v, 1924 5 sheets-sheet 1 braclrwmww,

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June 123, 192s. 1,542,872r H. F. GRUMAN EDGE TRIIMING V,MACHINE Filed Jam?, 1924 5 sums-SmmA 2 52 l 3mm H bmeKGanzaw,

June 23, 192s. 1,542,872

H. F. GRUMAN :ms ninnuno lucarne Filed Jan. v, 1924 5 shuts-sheet s JYoraceEGf-amw,

gwuemtoz June 23, 1925.

l 1,542,872 vH," F. GRUMAN avan 'rmume MACHINE Filed Jan. "z, 1924 5 sheets-sheet `5 figa! 29"* 5 55a 2% .5.9 @-@1 ff ,Horace 1'7 Gramm,

Patented June 23, 1925.

U NITED STAT Es 1 ST. LOUIS, MISSOURI, ASS'IGNOE T0 LEWIS INVISIBLE SIIICH MACHINE CO., A. CORPORATION O'F MAINE.

HORACE F. GRUMAN,

PnATi:Nr,'ol-FICEg4 A' Y DGE-TRIMMING MACHINE.'

` Appnatio filedianuary 7, 1924. serial No. 684,755.

To all whom 'it-may con-cern v K Bev it known that Hormon F. GRUMAN, i citizen of the United States, residing at St.

Louis, in the State of Missouri, ha\s inventedV 5 certain new and useful. Improvements iny Edge-Trimming Machines, of which the following is a speciiication. Y

Thiskinvention relates to new anduseful improvements in edge trimming machines generally,` although moreparticularly to a Amachine for trimming "the surplus fabric lying beyondvthe lineof`. scojlloped embroidery stitches.A

. In the prior artsuch las is shown in the U. S. Patent to West, 313,015, dated November- 24, 1885', provision is made for mechanically feedinga long narrow fabric strip having a previously formed line of embroidery scollops stitchedl thereon, passed a Vcutter which rotates about a horizontal aXis. In this patent, no provision whatsoever is made for trimming the surplus stoel;y or wide fabries or for. trimming the surplus stock from the bottoms of washskirts,lpetticoats, etc., which have previously been formed with a line Yof scolloped .embroidery stitches. In trimming this surplus stockfrom previously made up garments, itis necessary to hand feed they garment passed the cutter because mechanical feeding means cannot be adapted' for this class Vofwork owing to the irregular sizes of the garments as well. ask the 'irregular sizes of the scollops and the inherent iiexibility of the material. In theWest patent above noted, the rotary cutter isvexposed tothe operator and is therefore exceedingly dangerous. i Furthermore, in this patent construction the trimmed off pieces of fabric or lint, necessarily pile up in and `around the cutter and consequently tend to choke the latter4 and thereby imp-air its efficiency.

One of the principal objects of my invention is to provide an edge trimming machine which is especially `adapted for use in trimming the surplus stock beyond a line of scolloped embroidery stitches from previously formed garments.

Another object of the invention .is to provide a trimming mechanism for the purpose set forth, `which permits of the garment to be readily hand'fed passed the rotary cutter.

A further obj ect of the invention ,is to provide a horizontally disposed guide .for the garment arranged in cooperative-relation to the cutter yand adjustable in height to accommodate seams as well as materialsof different weights. y y

Aj further object of the invention is to providey manually controlled ymeans operable during the running of the machine to vary the height of the guide whereby the initial y,

loading of the machine may be readily accomplished and whereby the seams of garments may be freely moved through the guide.

. Xjstill further object of the invention is tol w provide a guide of the character described in which the upper memberis transparent to permit the operator to view `the point of cutting and thereby-follow the line of scolloped embroidery stitches while ther f garment 1s being hand fed past the cutter, thus insuring the cutting off ofy the surplus stock in a clean line lops. .f

v.Another objectfof the invention is vto provide a housing for the cutter and tov provide a suction device lfor automatically removing the trimmed off pieces of material from the housing, thereby not only avoiding all'danger Ato the `operator but also avoiding the clogging of-the cutterby the trimmed oilY material. n l

l, With'the above and other objects inview whichA will 'more readily appear las the ynature of the invention is better understood, the same consists in thev novel construction, combination and arrangementl of parts hereinafter more .fully described, illustratedv and claimed. l n

' In the accompanying drawings: y Figure l is a top plan view of an edge trimming machine constructed in 'accordance with my invention.

.along the outer edgeof the scol- Figure 8 is a horizontal sectional view taken on the line 8-8 of Figure 3.

Figure 9 is a bottom plan view of the work support.

Figure 10 is a rear elevation of the work support and supporting bracket.-

Figure 11 is a detail vsectional view taken on the line 11-11 of Figure 8.

Figure 12 is a rear elevation of the vertically adjustable cutter guard and work stop, together with the upper transparent work guiding member, and

Figure 13 is a bottom plan view thereof.

Similar reference characters designate corcoiresponding parts throughout the several figures of the drawings.

vReferring to the drawings my invention comprises a frame 5 having a base 6 and; j ournaled within the frame is a. horizontally disposed drive shaft 7 which is lubricated through the medium of oil or grease cups 8 8 attached to said frame. shaft extends beyond the right hand end of the frame 5 and attached to this proj ecsing end of said shaft is a pulley wheel 9. The left han-d end of t-he frame 5 is cast with a housinglO forming a compartment 11. The left hand end of the drive shaft 7 extends into the compartment 11 and fixed to said projecting end of the shaft is a rotary cutter 12, said cutter being' secured to the shaft by means of a. pin 12a which passes l through a. hub 13 formed on the cutter and through the shaft 7. rll`hel shaft 7 adjacent the cutter 12 is' journaled in a. bearing formed in a. web 11i of the frame 5. This bearing preferably includes a hardened bushing 15 .having an end flange 16 which is located between the. adjacent side face of the cutter 12 and the web 14. The bushing 15 is formed with a duct 17 which communi- Cates with the adjacent oil or grease cup 8 and with the shaft '7. The end of the compartment 11 is closed by a cap plate 18, said 'plate being detachably secured to the frame by means of screws 19 whereby upon removal lof said cap plate access to the cutter may be had. The housing 10V and the `plate 18 are conjointly formed with an air outlet opening' 20 which is located directly in rear of the cutter 12 and below the horizontal planeI containing the axis of the shaft 7. Extending rearwardly in. the general plane. of the cutter from the housing 10 and merging with the opening 2O is a tubular nipple 21, the longitudinal axis thereof being disposed in a horizontal plane and arranged at a tangent to a. circle having for its center the longitudinal axis of the shaft, the nipple being conjointly formed by the housing 10 and plate 18. By forming one-half of the nipple on the plate 18, I have. proy vided a construction which can be readily cast. The frontv of the housing is open as indicated at 22, and the housing`10 and The rotary plate 18, around the opening are formed with a flat vertical face 23 arranged in a plane parallel with the longitudinal axis of the shaft 7, and located intermediate said shaft and the front edge of the cutter 12.

The cutter 12 is formed with peripheral teeth 24, the side walls 25-25 converging outwardly to form resultant points 26. Each too-th includes al front face 27 and a rear face 28. The front face 27 of each tooth is, therefore, substantially V-shaped in plan view and the outer edges of this 'face n'ierg@J with the inclined walls 25-25 and forni two cutting edges m-a. The inner end of the front face 27 meets the inner end of the rear face 28 of the next adi acent tooth at 27. Thus I have provided a series of projecting teeth whichl are formed with forwardly extending faces of substantially V- shape in plan and providing cutting edges which converge outwardly towards the points of the teeth. This forward face 27 of each tooth lies in a. plane tangent to a circle, the axis of which is coincident with the axis .of the cutter shaft 7, that is, this' face extends inwardly from` the point of the tooth in a plane inclinedto a radial plane of the cutter. In this particular instance the forward face 27 of each tooth is also disposed in a plane parallel tothe axis of the cutter whereby both cut-ting edges o-f the given tooth will be 4disposed in the same plane relative to the horizontal. The body of the cutter 12 is formed with inclined sides 29-29 which merge with and are disposed in the planes of the Irespective converging side faces 25-25 of the teeth. In other words the inclined sides 29u29 of the cutter body are disposed between the cutting teeth 24 and the axis of the cutter for the purpose hereinafter more fully described.

The fro-nt opening 22 of the housing 'is closed by a plate 3() which is seated against the flat vertical face 23, and is secured to said housing and to the end plate 18^by screws 31. Upper and lower guide pins 32-32 project forwardly from said housing and Venter openings 33-33 in the front plate 30, thus assuring the proper vertical position of the plate for a purpose hereinafter describe-d. The plate 3() is formed with an opening, 34 of suliicient size to receive t-he cutter teeth 24 which project therethrough and in advance thereof.

A horizontally disposed work support 35, having an uninterrupted upper work sup-v porting surface 35a is disposed in front of the cutter 12, and is attached to the front wall or plate by an angular bracket 36 embodying a horizontal arm 37 and a vertical arm 38, the horizontal arm 37 being disposed under and secured to the worksupport by screws 39-39 and the vertical arm 38 being disposed against the plate 30 and secured thereto by screws UlV and upon theV horizontalarm'37 yof .the

supporting bracket-36.' The'slot 42 is in alinement with-the cutter 12 andthe cutting lo v blade 415is mounted for adjustment towards or from-thecutter 12.V The-rear end Volf-the blade 41 is formed Vwith." a= V-shaped notch 43 which corresponds in shape tofthe l'V'- shaped teeth I24 off-the cutter andi-:has its walls 44-44 undercut (see ig. 10) to 4pre-` sentsharp cutting edges 45-45. The stationary blade 41 isformed on its upper surface along theedges of the lnotch 43 only, with a raised portion or rib46V having its upper surface inclined upwardly towards the notch and merging with the walls .44-44 thereof at the sharp edges 45-45 l'These cutting edges 45-45 arearranged in a horizontalplane'cutting the aXisof the shaft 7,

and are'therefore located in a'plalne slightly above the fac`e35f. Y r Y The innerface ofthe verticall arm 36 'is recessed asl at 36a toreceive the teeth 24of the cutter, and this 'recess also forms a chute Vfor directing the trimmed off material from the point of cutting intothe housing11. if Y 'Y TheA outer ends of the wallsfv44-44 extend planeof the work supporting surrearwardlyr ofA the'teeth 21 and engage and.

cooperate with the finclined` sides v29--29 of the Vcutter to retain the cutting teeth in proper anddefinite relation with the cutting edges 45-45 of the stationary, especially should looserp'lay develop inthe shaft'7.` "Y

Thus during the rotation of the cutter 12, ther teeth .24 thereof willy beA presented in rapid succession `forfcooperation with the cutting' edges 4'5-45 of the stationary cutter. As a given tooth approaches the sta-v tionary edges 45-45, rthe inner end lof the tooth, viz: .the juncture 27, `will firstln'ieet said vstationaryv cutting edges; andthe'cutting edges :cv-0c ofthe tooth will 'then si# multaneously cooperate rprogressively "with the stationary rcutting edges and perform what 1s known as a5 shearing cut, the cut r beginning at the Ainnerl end of the tooth andl terminatingfat the outer end or point thereof. Thus, when the 4tooth begins its cutting operation, the forwardfface 27, and consequently the cutting edges v -x, is'in a planefinclinedy tothe horizontal, theplane extending upwardly andfforwardly, that is,

rearwardly relativetofthe direction of rotation of the cutter. K j

' In order to adjust the stationary blade 41 towards the cutter12 to .'meetpractical requirementsv due to sharpening etc., and Vto bladel in its under face (see Fig. 6') lwith a recess 46 having a shoulder 47. VAn ad-l justing Vscrew 48 extends longitudinally in 70 the plane of the cutter and" has threaded.

engagementwith the horizontal {arm l37 l' of the' work-supporting, bracket 36,; the slotted head Vv49 ofthe screw.. lbearing .aga-inst4 the shoulder47. rllhe horizontal, arm 37 oftsaidbraCketisprOVided with two slots 50-50 which extend-in the plane ofthe cutter, and clamping screws.l 5,1-51 pass. upwardly throughthese vslots and have threadedy engagement "with said stationary blade 41. Thus when it is desiredto movethe blade towards the cutteigand thereby obtain a close lit between tljie'cutting edges of lthe cutter and blade, the clamping screws are loosened a trifle and the adjusting screw 48 is turned, the head `49 thereof bearing against the shoulderl 46 of the blade and thusmoving the latter.- The clamping screws51-51 are then tightened and thestationary blade is therebyretained against movement. v

"In practice a 'fabric Fsuch Yas'aski'rt,

- petticoat yor f other garment is previously the line vof embroidery stitches `is then trimmed olf by `passing the fabric across the work-support vin cooperative relation to the cutter 12. f i w y *.In Vorder to -control-'the fabric F relative to the cutter` 12while said fabric is vbeing fedV by handpassedy the cutter,l lf have provideda footdevice which I` have designated as a whole Aby the'numeral l52.V This foot device includes a foot*y 53 and a supporting shank 54. The shank 54 ismounted between vertically disposed guides'55-55 securedA to the front plate'30 whereby said shank may `be vertically adjusted. The foot 53 'is' disposed ina horizontal plane andextends forwardly Vfrom the cutter 12 over the work-v suppo1ft'35'Y vand cooperates with the latter to formfa' horizontally disposed guiding channel y vforl the fabric to be: trimmed. The foot53 consists of upper'and `lower clamping rings 56 and`-57respectively The lower ring 57 is formed witlilan inwardly Vextending-rib 58 forming a resultant seat for supporting a transparent block 59 of'glass or any other suitable material, and the upper ring 56v extendsy inwardly over said transparent; block. Clamping screws 60serve to secure the rings and block together. This foot is secured to the lower end of the shank 54 by means. ofv ears 61-'61 and screws 62-62, the screws passing through the ears and engagingthreaded'openings in the'side vwalls of av Vshaped guard 63 which forms apart of the shank`54,`said guard 63 being VIa5 24 which vproject forwardly 1 through the opening 34 of the front cover plate 30. Depending below the lower surface of the foot 53 and in this instance being shown as an integral part of the guard 63 is a V-shaped stop .or guard 64.

.The foot device 52 is retained in a vertically adjusted position relative to the work-support 35 so as to permit sufficient space to be maintained between saidfoot and work-support whereby the fabric may be moved freely passed the cutter. It is to be noted. that the foot device does not bear upon nor impingle the fabric. The height of the foot device relative to the work-support must be such that the space between the stop 64 and the work-support will readily permit the free passage of the marginal portion f of the fabric passed the cutter. The stop or guard 64 is very narrow and is adapted to be engaged by the raised embroidery stitches S and thereby limit the movement of the fabric towards the cutter, the width of the stop 64 being sufficiently narrow to permit the cutter to trim the surplus material f closely along the line of the embroidery stitches S. As the operator moves the fabric over the work support she can readily see through the transparent foot device that the cutter is properly functioning, thus permitting herl .to follow the scolloped 'line of embroidery stitches S at the point of cutting.

In order to vertically adjust the foot device .52 relative to the work-support whereby fabrics of different weights maybe readily accommodated, or whereby seams may be readily passed thereunder without stopping the machine, I have provided arearwardly extending manually controlled lever 65 and have fulcrumed the same as at 66 upon the top of the housng 10, the longitudinal axis of the pivot 66 being parallel with shaft 7. The forward end of the lever 65 extends to a point in advance of the front plate 30 and a link 67 is pivotally connected at its upper end as at 68 to said forward end of the lever and at its lower end as at 69 to the shank 54 of the foot. device. A coil spring 70 is disposed between the housing lO and the rear arm of the lever and tends to normally urge the forward arm of the lever downwardly. This downward movement of the forward end of the lever is limited by an adjusting screw 71 which has threaded engagement with the forward arm of the lever and the lower end of this screw bea-rs against the upper portion of the housing l0. Thus by adjusting the screw 71 inv either direction the vertical position of the foot 53 will be simultaneously adjusted. Thus the screw 7l serves to limit the lowermost position of the foot device relative to the work support. l/Vhen it is desired to elevate the foot the front arm of the lever is moved upwardly by the adjusting screw 71 against the tension of the spring 70. Vhen it is desired to lower the foot the adjusting screw 71 is turned in the opposite direction and the spring 7 O will automatically and instantly Vrock the lever 65 upon its fulcrum and cause Athe foot to follow. In order to lockv the screw 7l against movement I have provided the same with a locking vnut 72. In order to block the foot against upward movement I have provided an adjusting screw 7 3 in the rear arm of the operating lever 65, said screw being adapted to eng-age the upper part of the housing l0. This screw may be locked in a given position by a lock nut 74. Thus I have provided an operating lever for adjusting the vertical position of the foot and have associated with said lever two adjusting screws 7l and 73 which are respectively mounted on opposite sides of the fulcrum 66 of the lever. rIhe lever 65 may be connected to a treadle T or to any other leg `operated device through the medium of a chain or other connection Y75 `whereby the foot may be elevated by the operator during the running of the machine when seams or the like are passed under the foot or for raising the foot to facilitate the insertion of the fabric into the guidevchannel y.

The cutter' is rotated at. the rateof approximately 1800 R. P. M. and consequently the trimmed off vmaterial will be more in the nature of lint or fuzz than stripsor pieces. If this fuzzy material were not carried away the operator would be compelled to breath the same. Furthermore, vthis lint or fuzzy material would quickly clogg the teeth of the .cutter and thereby lcause it to cease functioning. In order, therefore, to eliminate these two objections, I have provided means for withdrawing this trimmed off fuzzy-like material to a point .remote from the operator. To this end I have provided a suction fan 7 6 and have mounted the same at a point in rear of the trimming Y machine. This fan includes a. driving shaft 77 which is disposed in parallel relation with the shaft 7 of the trimming machine and is driven from the latter by means of a belt 78. The suction fan. 7 6- is, of course, provided, with the usual casing and is also provided with an inlet 79 andan outlet 80. The inlet 79 is tubular in cross section and is disposed in alinement with the nipple 2l of the trimming machine. A flexible tu bular couplingSl connects the nipple 21 with the tubular inlet 79 and by reason of this couplingrbeing flexible the suction fan 76 may be readily positioned in the same horizontal plane as the trimmingmachine or in a plane above or below the same. In order to obtain the proper suction to with draw the lint-like material from the compartrnent-llof the Atrimming machj'i-neLlhave-provided theA Work-support zbracket 8,

with Yair inlets 82. I have also formed the end cap 1S lof said compartmentwith any air inlet' 83-Which is concentric With the cutter l2 and havepositioned over saidopening 83a foraminous coveringSl. Y

Infactory systems, garments are arranged in ;lots and theselots are divided into bundles. I The garments in a-particular lot7 areof the same Weight and consequently it is only necessaryto initially adjust the machine in orderlto'take care of all of the garments of. a particular -lot. Therefore, when bundlesof a certain lotare handed to an op erator,7she first adjusts the vertical'position of the foot device by meansof the screw 7l to insure the free passage of .the fabric throughthe .guiding channel y.l She can.

also regulate they uppermost position of the f foot device by means of theadjustingscreiv 73 in order to thereby permit of sufficient passage for seams through the guiding channel if., Power is then applied to the machine in theusual manner, `and the operator proceeds Withthe trimming off operation. She then elevates the foot device 52 by `means of the .treadle T, vand initially inserts the fabric in said guiding channel in a flat condition. The'fabric is held by bothhands of thev operator While the machineis being loaded and also While the fabric is being trimmed. The treadle is released and thefabric is fed vby hand past theV cutter, the fabric being simultaneously moved in a direction-towards andV from the-cutter in order to follow the line-of scollops.

vieW theV point of Work and this avoids the necessity of frequently removing the fabric from under the foot in order` to ascertainV Whether o-r not the line of trim 'has been cleanly made.v If the garments being operated upon, areeformed with seams Which pass thereunder without dragging, and upon release of the treadle, the spring Will cause the foot device to return to its previously determined loWermost position. AThe trimmed off pieces voflfabrics, which are in the form of lint, are fed downwardly-by the cutter through the chute 36 into the housing l1 from whence it is drawn out by the suction device.

From the -foregoing it will be seen that a maximumamount of Work can be obtained; that the operator is protected from the cut-V ter by the housing; that the trimmed olf material is Ynot breathed by the operator but is carried off, and that the trimmed off material is not left Within. the housing toy choke the cutter but is automatically and constant'-y ly removedVK therefrom.

By means of the trans' parent foot device, the operator can readily horizontal axis on said` frame, a horizontally disposed iWork, supporting device Yarranged 1n cooperative relationjto said cutter' and having an uninterrupted Work supportingk surface, ay foot device disposed vabove the Work-support, said devices being respectivelylocatcd in spaced parallel planes to provide a horizontal guiding channel for the. body fabric during the handfeeding thereof, and manually cont-rolled means includ-- ing a lever fulcrumed on the frame forelef vating said foot device, to vary the height of said guiding channel.y

. 2. In'fa hand feeding embroidery edge trimming machine, the combination with, a frame, of a rotary: cutter journaled on a horizontal axis on said frame,a horizon. tally disposed Work supporting device arf: ranged in cooperative relation to said cut. ter and having an uninterrupted Work supporting surface, a footdevicedisposed above the, Work support, said .devices being respectively'located in spaced parallel planes. to

provide a horizontal guiding channel for,

device relative toI said .Work support.

3. Iny a hand feeding embroidery edge trimming machine, thecombin'ation With a frame,.of;,a ,rotary cutter journaled in a horizontal aXison said frame, ahorizontally disposed Work supporting,device` arranged in cooperativer relation to said ycutter and having `an uninterrupted Work supporting surface, a footfdevice disposed above ythework support, said devices being respectively located in spaced parallel planes Vtoyprovide a, horizontal guiding channelfor the body fabric fduring theA hand feeding thereof,- manually controlled meansincluding alever fulcrumedAo-n -the frame for elevating said foot device to vary. the height of said guiding channel, and an adjusting screw carriedby the lever andcooperating with the frame tolimit thelowermost position of said foot device relative tosaid AWork support.y l

l'. In a hand feeding embroideryedgel having Aan uninterrupted Work supporting surface,- a foot ydevice disposed abovel the Work support, said devices being respectively located li-n spacedparallel planes to iY providea` horizontaly guiding channel, for,

K frame the body fabric during the hand feeding thereof, manually controlled means including a lever fulcrumed on the frame for elevating said foot device to vary the height of f said guiding channel, adjustable means to limit the lowermost position of said foot device relative to said work support, and a spring disposed between the lever and the frame for normally holding the foot device in its lowermost position.

5. In al hand feeding embroidery edge trimming machine, thev combination with a frame, of a rotary cutter journaled on a horizontal axis on said frame, a horizontally disposed work supporting device arranged in cooperative relation to said cutter and having an uninterrupted work supporting surface, a foot device disposed above the work support, said devices being respectively located in spaced parallel planes tov provide a horizontal guiding channel for the body fabric yduring the hand feeding thereof, manually controlled means including a lever fulcrumed on the frame for elevating said foot device to vary the height of said guiding channel, adjustable means to limit the lowermost position of said foot device relative to said work support, a spring disposed between the lever'and the frame for normally holding the foot device in its lowermost position, and adjustable means for limiting the uppermost position ofsaid foot device relative to said work support.

6. In a hand feeding embroidery edge trimming machine, the combination with a frame, lof a rotary cutter journaled on a horizontal axis on said frame, a horizontally disposed work support mounted on' the in advance of and in cooperative relation to said cutter, said work support having an uninterrupted work supporting surface, a foot device disposed above the work support, said devices being respectively located in spaced parallel planes to provide a horizontal guiding channel for the body fabric during the hand feeding thereof, manually controlled means including a rearwardly extending lever fulcrumed on the frame above the cutter for elevating said foot device to vary the height of said guiding channel, an adjusting screw mounted on the lever in advance of its fulcrum and co-Y operating with the frame to limit the lowermost position of said foot device relative to said work support, and a spring disposed in rear ofthe lever fulcrum and arranged between the lever and the frame for yieldablyholding said foot device in its lowerrnost position. l

7. In a hand feeding embroidery edge trimming machine, the combination with a rotary cutter operable about a horizontal axis, of a horizontally disposed work supporting device arranged in cooperative relation to said cutter and having an uninterrupted work supporting surface, anda transparent foot device disposed above the work support and arranged in advance Of and in cooperative relation with said cutter, said devices being respectively located in spaced parallel horizontal planes to provide a horizontal guiding channel for the body fabric during the hand feeding' thereof, one of said devices being provided with an embroidery-engaging flange to limitV themovement of the fabric towards the cutter, said foot device extending forwardly beyond the embroidered edge of the fabric.

8. In a hand feeding embroidery .edge trimming machine, the combinationV withY a rotary cutter operable about a horizontal axis, of a horizontally disposed work supporting device arranged in cooperative relation to said cutter and having an uninterrupted work supporting surface, and a transparent foot device disposed above the work support and arranged in advance of and in cooperative relation with said cutter, said devices being respectively located in spaced parallel horizontal planes to provide a horizontal guiding channel for the body fabric during the hand feeding thereof, one of said devices beingprovided with an embroidery-engaging flange to limit the move- .ment of the fabric towards the cutter, said foot device extending forwardly beyond the embroidered edge of the fabric and including upper and lower clamping rings, and a block of transparent material clamped between said rings.

9. In an edge trimming'machine, the coinbination of a. main frame having a housing formed at one end thereof, said vhousing having an open outer side, a shaft journaled. in said frame and projecting intoy saidhousing, a cutter 'rixed to said shaft and disposed in said housing, and a closure cap for said open outer side of said housing, said housing and cap being conjointly formed with a. rearwardly extending nipple communicating with the interior of the housing.

l0. In an edge trimming machine, the combination of a Vmain frame having a housing formed at one end thereof, said housing having an open outer side, a shaftjournaled in said Vframe and projecting into said housing, a cutter fixed to said shaft and disposed in said housing, and a closure cap for said open outer side of said housing, said housing and cap being conjointly formed with a. rearwardly extending nipple communicating with the interior of the housing, saidnipple being disposed in a plane below the shaft and having its longitudinal axis extending in a plane tangential to a circle having for its center' thelongitudinal aXis of the shaft.

11. In an edge trimming machine, the combination of a main frame having a housing formed at one end thereof, said -'-'-liousing having an open outer side, a shaft formed with an air inlet o eninfr arrangedl in alinement with said shaft, said lio-using and cap being conjointly formed with a rearwardly extending ynipple communicating with the interior of `the housing.

12.In an edgel trimming machine, Ythe combinationH of a main frame' having a housing formed at vone end'thereof, said housing having an open outer side, a shaft journaled in said frame and project-ing into said housing, a cutter' fixed to said shaft and disposed in said housing, and a closure cap for said open outer side of said housing and formed with an air inlet opening arranged in alinement with said shaft, said housing and cap being conjointly formed with a rearwardly extending nipple coinmunicating with the interio-r of the housing,

and a cover for said air inlet opening" formed of foraminous material.

13. In an edge trimming machine, the combination with va frame including a housing, of a rotary cutter` located in said housing, said housing being provided with an air inlet and an air outlet and with an opening for the teeth of the cutter, a work support disposed adjacent said opening and in cooperative relation to ,said cutter, a chute for directing the trimmed off material into the housing, and a suction device cooperating wit-h said air outlet for withdrawing said trimmed off material from the Vhousing.

la. In an edge trimming machine, the combination with a frame' including a housing', of a rotary cutter located in said housing, and fixed to a driving shaft jour naled in said frame, said housing being-provided with an air inlet and an air outlet and with an opening for the teeth of the cutter, a work support disposed adjacent said opening and in cooperative relation to said cutter, a chute for directing the trimmed off material into the housing, a suction device cooperating with saidV air outlet for withdrawing said trimmed o-if materialrfrom the housing and means for driving the suction device from the cutter.

l5. In an edge trimming machine, the combination with a frame including a housing, of a. horizontal shaft journaled in said frame, a rotary cutter having peripheral cutting teeth disposedl within the hous ing and fixed to said shaft, said housing being pro-vided with an air inlet and an `air outlet and with an opening for t-he teeth of the cutter, a work support disposed adjacent said opening and in cooperative rclation to said cutter, a chute for directing the trimmed ofi' material into the housing,

avsuction device cooperating withsaid air (jiutlet for withdrawing "said trimmed od material from the housing, saidpsuction de vice including -adriving shaft arranged in parallelism with the cutter shaft, and a driving connection between the cutter shaft and the shaft of the suction device.

16. In an edge y trimming machine, the combination with a frame including a housing, of a 'horizontal shaftv journaled in said frame, a rotary cutter fixedto the shaft and located'within the housing, said cutter j having peripheral cutting teeth, said housingbeing provided with an air inlet and an air outlet and with an opening for the teeth of j the cutter, a horizontal work support disposed in front of the frame adjacent said opening and in cooperative relation to said cutter, a chute for directing the trimmed ofi' material into the housing, a rearwardly extending nipple secured to the housing in alinement with the air outlet, and a suction device attached to said nipple for withdrawing said trimmed off material from the housing.

17. In an edge trimming machine, the combination with a frame including a housing, of a horizontal shaft journaled in said frame, a rotary cutter fixed to t-he shaft and located within the housing, said cutter having peripheral cutting teeth, said housingl being provided with an air inlet and an air 'outlet and with an opening for the teeth of the cutter, a horizontal work support disposedin front of the frame adjacent said opening'and in cooperative relation to said critter, a chute for directing the trimmed off n material into the housing, a rearwardly eX- tendirrg nipple secured to the housing inv alinement with the air outlet, a suction device located in'rear of the frame and including a horizontal driving shaft arranged in parallelism with the cutter shaft, a flexible conveyor connecting the nipple and suction device, and a driving connection-between the cutter shaft and the shaft of the suction device.

18. In an edge trimming machine, thel combination with a frane including a housing, of a horizontal shaft journaled in said frame, -a rotary cutter fixed to the sha-ft and located within the housing, said cutter having peripheral cutting teeth, said housing being provided with an air inlet and an air outlet and with an opening for the teeth of the cutter, a horizontal work support dis- `posed in front 0f the frame adjacent said ing for its'center the longitudinal aXis vof said shaft, and a suction device attached to said nipple for withdrawing said trimmed off material from the housing.

19. In a hand feeding embroidery edge trimming machine, the combination VWith a rotary cutter operable about a horizontal axis, of a horizontally disposed Work supporting device arranged in cooperative relation to said cutter and having an uninterrupted Work supporting surface, and a Jfoot device disposed above the Work support, said devices being respectively located in spaced parallel horizontal planes to provide a .horizontal guiding channel for thebody fabric during the hand feeding thereof, said Work supporting device including a supporting bracket including a horizontal arm having a pair of spaced slots formed therein, a hori- Zontal Work support mounted on said horizontal arm and including a slot disposed in advance of saidcutter, a stationary trimmer blade located in said slot and adjustable to-A wards and away from said cutter, and screws extending through the slots of said hori- Zontal arm and engageable With said triinmer blade to clamp the latter against movement.

In testimony whereof I hereunto afiiX my signature in the presence of tvvo Witnesses.

Y HORACE F. GRUMAN. Vitnesses A. P. SCHOEAP, J. E. FARRELL. 

